North Wantagh Water Hardness & Quality Report (2026)
Water Hardness
4.4 grains per gallon
Source
reservoir
pH Level
7.4
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
120 mg/L
Est. Daily Cost
$0.20
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In North Wantagh, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In North Wantagh | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.1 yrs | 8.5 yrs | -16% |
| Washing Machine | 10.8 yrs | 12 yrs | -10% |
| Water Heater | 12.6 yrs | 15 yrs | -16% |
Regional Water Comparison
How North Wantagh compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ North Wantagh, New York | 74.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | reservoir |
| Wantagh, New York | 121 mg/L | 5.8 ppt | 🟠 Hard | reservoir |
| North Bellmore, New York | 174 mg/L | 8.3 ppt | 🟠 Hard | reservoir |
| Bellmore, New York | 78.5 mg/L | 3.9 ppt | 🟡 Moderately Hard | reservoir |
| Levittown, New York | 82.5 mg/L | 4 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How North Wantagh compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ North Wantagh | 74.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes North Wantagh's Water Unique?
Local geology and source profile
North Wantagh, New York, in Nassau County — a Nassau County unincorporated community adjacent to Wantagh and Seaford on Long Island's South Shore — receives its water from the Nassau County Water Authority, drawing from the Long Island aquifer system through the south-central Long Island distribution.
The soft 74.5 mg/L hardness and TDS of 120 mg/L reflect the Nassau County Long Island aquifer supply's soft character — the Pleistocene Ronkonkoma Moraine outwash sands are largely siliceous with minor calcareous cement, while the deeper Cretaceous Lloyd aquifer is predominantly insoluble quartz sand (compare Wantagh NY: 72/116 in Nassau County comparable; Seaford NY: 76/124 in Nassau County comparable; North Wantagh consistent soft from the same Nassau County Long Island Pleistocene aquifer supply). The Long Island aquifer at Nassau County — Pleistocene Ronkonkoma outwash (slightly calcareous — primary hardness contributor), Cretaceous Lloyd aquifer (insoluble — dilutant), and Holocene beach sand (insoluble — dilutant).
At 74.5 mg/L with TDS 120, North Wantagh's water is soft — minimal scale buildup, appliances last well with standard care. Annual descaling is appropriate. The PFAS level of 3.7 ppt is moderate and well-managed. Review the Nassau County Water Authority's annual water quality report for the latest monitoring data.
Geology & Source: North Wantagh in Nassau County draws from the Nassau County Water Authority on the Long Island aquifer (Nassau County, south-central New York) — the Long Island aquifer at Nassau County is developed in Pleistocene Ronkonkoma outwash (slightly calcareous) and Cretaceous Lloyd aquifer (insoluble) — New York Nassau County Long Island aquifer Pleistocene supply produces soft water at 74.5 mg/L with TDS 120 mg/L.